Compiled for ATTiny84.
The fuses are:
Extended:  11111110 (Selfprog) (only needed if a bootloader is used)
High Byte: 11011110 (Reset, no Debug, SPI possible, WDT off, no EEPROM preserve, Brown out Trigger level = 1,7V-2V)
Low Byte:  01100010 (div clock by 8, no Clockoutput)

The program would be small enough for an ATtiny44 too.

version1-0: Software for the Fahrradlader. (c) 2012 by Malte Marwedel, terms of use: GPL V 2.0 or later

bootloader: Optional modification the bootloader from Peter Dannegger
http://www.mikrocontroller.net/topic/73196 version 2.1
Modifications:
STX_PORT + SRX_PORT Port: PORTB
STX: PB1
SRX: PB2
Bootloader activity LED: PB0

Because the ATtiny uses 3.3V, you have to put a 470Ohm resistor
in series with the SRX pin if you use a RS232 5V level shifter like MAX232.
Together with the LED and its resistor, this will result in a proper
voltage level for the ATtiny.
